Positive Grid has just unveiled its new Reactor amplifier series, which features two compact combo amps that (predictably) are loaded to the brim with features. Available in 50W and 100W configurations (for $349 and $449 right here), the Reactor amplifier series combines Positive Grid’s latest Amp Intelligence technology with onboard effects, wireless connectivity, and AI-assisted tone generation.
The Reactor lineup launches with two models: the Reactor 50 and Reactor 100. Both amps share the same feature set and control layout, with the main difference being output power.Each combo is housed in a wooden cabinet and features a custom-voiced 12-inch speaker, which should provide pretty much all you need when it comes to tone.
At the core of both Reactor models are 24 amp models and 27 onboard effects. Players can run up to eight effects simultaneously, allowing for complex signal chains without additional hardware. The front panel provides immediate access to six primary amp styles, alongside familiar controls for gain, EQ, master volume, and effects.
Additional tone-shaping options include the Heat and Push/Smooth switches, which adjust harmonic response, presence, and high-frequency character.
The headline feature of the Reactor series is Positive Grid’s proprietary Amp Intelligence engine. Rather than focusing solely on EQ curves or gain structures, Amp Intelligence analyzes elements such as transformers, gain stages, bias points, and harmonic response to recreate the feel and dynamics of the original amplifiers.
Deep editing is handled through the Reactor mobile app. Users can build and modify signal chains using a drag-and-drop interface, access additional amp and effect parameters, and generate tones using AI-powered tools.
Though one of the most ambitious features (albeit something we’ve seen before) is Creator Hub’s Tone Capture system. Users can upload an audio clip, and the software attempts to recreate the guitar tone heard in the recording. The system also supports image-based tone generation, allowing players to upload photos of amplifiers or pedalboards and generate a corresponding preset.
Text prompts are also supported. Users can describe a tone using keywords, musical styles, or artist references, and the software will generate a matching sound profile.
Another AI-assisted feature is Tone Memory. The system learns a player’s preferred amp settings and EQ adjustments over time, using that information to personalize future tone recommendations and refinements.
Positive Grid is also offering the optional Reactor Control Footswitch, sold separately. The six-button controller provides access to presets, effects, and performance functions, and can connect to the amp either wirelessly or via a wired connection. An expression pedal input is also included, making the footswitch a potentially essential addition.
Get the Reactor at the links below for $349 or $449, depending on if you’re going for the 50W or 100W models:
- Here through Positive Grid’s website
- Here via Sweetwater
- Here via American Musical Supply
- Here via Guitar Center
- Here via Musician’s Friend
